CN104253348B - Plug and use the electric coupler component of this plug - Google Patents

Plug and use the electric coupler component of this plug Download PDF

Info

Publication number
CN104253348B
CN104253348B CN201310556875.5A CN201310556875A CN104253348B CN 104253348 B CN104253348 B CN 104253348B CN 201310556875 A CN201310556875 A CN 201310556875A CN 104253348 B CN104253348 B CN 104253348B
Authority
CN
China
Prior art keywords
plug
coupling nut
casing
escape groove
plug casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201310556875.5A
Other languages
Chinese (zh)
Other versions
CN104253348A (en
Inventor
刘向阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Aviation Optical Electrical Technology Co Ltd
Original Assignee
China Aviation Optical Electrical Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Aviation Optical Electrical Technology Co Ltd filed Critical China Aviation Optical Electrical Technology Co Ltd
Priority to CN201310556875.5A priority Critical patent/CN104253348B/en
Publication of CN104253348A publication Critical patent/CN104253348A/en
Application granted granted Critical
Publication of CN104253348B publication Critical patent/CN104253348B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Mechanical Coupling Of Light Guides (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The present invention relates to electric connector field, particularly relate to a kind of plug and use the electric coupler component of this plug.Plug is with front end for inserted terminal, it includes plug casing and coupling nut, plug casing is also cased with cutting ferrule, card puts and is provided with convex key and penetrates three crank slots of its jacket wall, its front end has for the pressure-bearing portion with the press-fit of adapter socket top, ripple spring it is top-loaded with between rear end and plug casing, tandem on the internal face of coupling nut it is provided with escape groove and keyway, escape groove is and the annular groove of plug casing coaxial line, the convex key mapping that card puts is in described escape groove, the convex key that keyway puts with card is corresponding and its front end extends to escape groove, the outer peripheral face of plug casing is provided with the bail that three crank slots put with card are corresponding, bail is positioned at the rear end of three crank slots and spacing with before and after coupling nut coordinates.The bayonet arrangement of circular bayonet connector is combined togather with round thread electric connector and can provide the feel that puts in place by this plug.

Description

Plug and use the electric coupler component of this plug
Technical field
The present invention relates to electric connector field, particularly relate to a kind of plug and use the electric coupler component of this plug.
Background technology
Along with the modular development of the electrical equipments such as communication, electric coupler component is obtained for extremely wide application in all trades and professions.The slab-like jack being frequently seen in daily life and corresponding plug are simplest electric coupler components in.
In the occasion that some are special, it is desirable to electric coupler component not only possesses the effect of on-off circuit, also to possess sealing, antivibration, the characteristic such as locking.Wherein with the GJB599 round thread connector assembly being representative, it is simply that possess the one of the electric coupler component of above-mentioned characteristic.Round thread electric coupler component is made up of plug and socket, plug includes columnar plug casing, rotating on plug casing it is equipped with coupling nut, between coupling nut with plug casing, (grafting direction) anticreep coordinates along the longitudinal direction, socket includes Socket casing, Socket casing is provided with the external screw thread corresponding with the female thread of coupling nut, after plug and socket plug together, by coordinating between coupling nut with Socket casing, the two is locked, wherein in order to avoid plug casing and Socket casing rotate mutually in the process plugged together, the outer peripheral face of plug casing is provided with positioning key, the inner peripheral surface of Socket casing is provided with the keyway corresponding with positioning key;In order to realize plug and the socket sealing at inserted position place, plug casing is often set with the interfacial seal circle that the front end face with Socket casing coordinates;Loosen to realize the antivibration between plug and socket, between coupling nut and plug casing, be additionally provided with ripple spring, rely on ripple spring to stop coupling nut automatically to rotate rollback for the pressure that coupling nut provides;For indicating plug, whether grafting puts in place with socket, and Socket casing is provided with labelling colour band, illustrates that when coupling nut covers colour band plug and socket grafting put in place.Threaded electric coupler component have connect that torsional forces is little, anti-vibration, advantage that impact capacity is strong, but plug together with socket to put in place at plug and only coordinate instruction with coupling nut with colour band, there is certain uncertainty, additionally, ripple spring just starts compressive deformation when coupling nut just starts to rotate, this not only increases the torsion needed for the nut that is rotatably connected to a certain extent, and very easily cause the damage of ripple spring, it addition, threaded also make to plug and socket plug together and separating rate is restricted.
Drawbacks described above for round thread connector assembly, market occurs in that a kind of circular bayonet connector, circular bayonet connector, circular bayonet connector differs only in round thread adapter, thread groove on Socket casing be rewritten into big pitch, with three crank slots of bail nest, the female thread on coupling nut has been replaced by bail.Firstly, since the pitch of three crank slots is relatively big, therefore plug can quickly plug together with socket and separate, it addition, when plug and socket plug together and put in place, bail return back in bail nest and can produce the feel that puts in place.But, three crank slots make the circular antivibration of bayonet connector, shock resistance also decline therewith relative to the increase of thread pitch, and bail then can cause the interfacial seal between plug and socket to lose efficacy after rollback in bail nest.
If by above description it can be seen that the bayonet arrangement of circular bayonet connector can be combined with round thread electric connector, then round thread electric connector certainly will be enabled to and can also possess the feel that puts in place.
Summary of the invention
It is an object of the invention to provide plug that a kind of bayonet arrangement by circular bayonet connector is combined, that there is the feel that puts in place with round thread electric connector.
Meanwhile, the present invention also aims to provide the electric coupler component using above-mentioned plug.
In order to solve the problems referred to above, plug is by the following technical solutions: plug, this plug is with front end for inserted terminal, it includes plug casing and coupling nut, plug casing is also cased with cutting ferrule, card puts and is provided with convex key and penetrates three crank slots of its jacket wall, its front end has for the pressure-bearing portion with the press-fit of adapter socket top, ripple spring it is top-loaded with between rear end and plug casing, tandem on the internal face of coupling nut it is provided with escape groove and keyway, escape groove is and the annular groove of plug casing coaxial line, the convex key mapping that card puts is in described escape groove, the convex key that keyway puts with card is corresponding and its front end extends to escape groove, the outer peripheral face of plug casing is provided with the bail that three crank slots put with card are corresponding, bail is positioned at the rear end of three crank slots and spacing with before and after coupling nut coordinates.
The rear end of described three crank slots is hatch frame, and described bail is arranged in the hatch frame of corresponding three crank slots.
Being provided with pad in the rear end of cutting ferrule on plug casing, the opening of three crank slot rear end is blocked by pad.
Bail is by stretching to spacing with before and after coupling nut in the escape groove of coupling nut cooperation.
nullElectric coupler component is by the following technical solutions: electric coupler component,Including plug and socket,Plug includes plug casing and coupling nut,Socket includes Socket casing,Socket casing is provided with the external screw thread corresponding with coupling nut,Plug casing is also cased with cutting ferrule,Card puts and is provided with convex key and penetrates three crank slots of its jacket wall,Its front end has the pressure-bearing portion for coordinating with adapter socket、Ripple spring it is top-loaded with between rear end and plug casing,Tandem on the internal face of coupling nut it is provided with escape groove and keyway,Escape groove is and the annular groove of plug casing coaxial line,The convex key mapping that card puts is in described escape groove,The convex key that keyway puts with card is corresponding and its front end extends to escape groove,The outer peripheral face of plug casing is provided with the bail that three crank slots put with card are corresponding,Bail is positioned at the rear end of three crank slots and spacing with before and after coupling nut coordinates.
The rear end of described three crank slots is hatch frame, and described bail is arranged in the hatch frame of corresponding three crank slots.
Being provided with pad in the rear end of cutting ferrule on plug casing, the opening of three crank slot rear end is blocked by pad.
The front end place of plug casing has a seal section, is provided with for sealing, with the outer peripheral face of this seal section, the side face sealing ring coordinated in Socket casing.
Bail is by stretching to spacing with before and after coupling nut in the escape groove of coupling nut cooperation.
In using this plug process, when needing it to plug together with adaptive socket, first turn coupling nut is so as to be connected with adapter socket, before the pressure-bearing portion of cutting ferrule contacts with adapter socket, the convex key of cutting ferrule is owing to the effect of ripple spring is always situated in the escape groove of coupling nut, now coupling nut dallies relative to cutting ferrule and promotes plug and adapter socket to plug together gradually, after the pressure-bearing portion of cutting ferrule contacts with adapter socket, when further rotating coupling nut, then cutting ferrule by under the effect of adapter socket by starting coordinating between its convex key and keyway of coupling nut to be moved rearwards by and rotating with coupling nut, now the bail on plug casing starts to rotate relative to cutting ferrule, when plug puts in place with adapter socket grafting, cutting ferrule rollback also makes bail fall into just can to send the signal that puts in place in its bail nest.As can be seen here, the bayonet arrangement of circular bayonet connector is combined togather with round thread electric connector and can provide the feel that puts in place by this plug.
Further, after three crank slot rear ends being set to hatch frame, it is possible to be easy to the assembling to cutting ferrule;Pad is able to coordinate with ripple spring, reduces the rotational resistance between cutting ferrule and ripple spring;Enable bail to pass through to stretch to the coordinate structure that to greatest extent simplify plug spacing with before and after coupling nut in the escape groove of coupling nut, reduce the difficulty of processing to it.
Accompanying drawing explanation
Fig. 1 is the structural representation of plug;
Fig. 2 is the exploded view of plug;
Fig. 3 is the structural representation of the cutting ferrule in Fig. 2;
Fig. 4 is the structural representation of the plug casing in Fig. 2;
Fig. 5 be plug casing with cutting ferrule, ripple spring coordinate schematic diagram;
Fig. 6 is the structural representation of coupling nut;
Fig. 7 is the use state diagram (original state) of plug;
Fig. 8 is the use state diagram (plugging together state) of plug;
Fig. 9 is plug casing, cutting ferrule and coupling nut position view in an initial condition;
Figure 10 is plug casing, cutting ferrule and the coupling nut position view when plug plugs together with adapter socket;
Figure 11 is the structural representation of electric coupler component.
Detailed description of the invention
The embodiment of plug, as Figure 1-10 shows, this plug is with front end for inserted terminal, and it includes plug casing 11 and coupling nut 12.
Plug casing 11 is substantially in ladder axle sleeve shape, the big footpath section of it path section including front end and rear end, path section front end place has a seal section, this seal section may be used for coordinating the interfacial seal realized therebetween with the side face sealing ring 14 in adapter socket 13, being provided with positioning key 15 in the rear end of seal section on the outer peripheral face of path section, positioning key 15 coordinates for spin-ended with the housing of adapter socket 13.The section front end place, big footpath of plug casing 11 is provided with the bail 16 radially enclosing protrusion, and the rear end of big footpath section is then provided with the rearward step surface in face.
Coupling nut 12 is also in pre-small post-large ladder axle sleeve shape, it includes being positioned at the path section of front end and being positioned at the big footpath section of rear end, the path section of coupling nut 12 has female thread, the outer peripheral face of its big footpath section is provided with knurling structure, additionally, being additionally provided with escape groove 17 and keyway 18 on the big footpath section inner peripheral surface of coupling nut 12, escape groove 17 is and the annular groove of coupling nut 12 coaxial line, and keyway 18 extends along the longitudinal direction and its front end extends in escape groove 17.In the present embodiment, the internal face rear end of coupling nut 12 is additionally provided with jump ring 19, the front place of jump ring 19 is provided with step pad 20, step pad 20 is enclosed within plug casing 11 and coordinates with on plug casing 11, the rearward step surface block in face, so that coupling nut 12 cannot come off from the front end of plug casing 11, the bail 16 on plug casing 11 mountain is arranged in escape groove 17, so that coupling nut 12 can dally on plug casing 11.
Plug casing 11 is also cased with cutting ferrule 21, cutting ferrule 21 is between coupling nut 12 and plug casing 11, its front end is provided with the pressure-bearing portion for pushing up press-fit with adapter socket 13, ripple spring 22 it is top-loaded with between rear end and plug casing 11, in the present embodiment, pressure-bearing portion is constituted by turning edge in the place of cutting ferrule 21 front end, and ripple spring 22 is enclosed within plug casing and between bail and step pad, and both sides place is respectively equipped with packing ring around.It addition, be additionally provided with three crank slots 23 corresponding with bail 16 on cutting ferrule 21, three crank slots 23 run through the jacket wall of cutting ferrule 21 and rear end is hatch frame, and bail 16 is just arranged in the hatch frame of corresponding three crank slots;The outer peripheral face of cutting ferrule 21 is provided with convex key 24, and convex key 24 is corresponding with the keyway 18 in coupling nut 12, and under original state, convex key 24 stretches in the escape groove of coupling nut 12, so that coupling nut 12 can dally relative to cutting ferrule.
When this plug of needs plugs together with adapter socket, first turn coupling nut is so as to be connected with adapter socket, before the pressure-bearing portion of cutting ferrule contacts with adapter socket, the convex key of cutting ferrule is owing to the effect of ripple spring is always situated in the escape groove of coupling nut, now coupling nut dallies relative to cutting ferrule and promotes plug and adapter socket to plug together gradually, after the pressure-bearing portion of cutting ferrule contacts with adapter socket, when further rotating coupling nut, then cutting ferrule by under the effect of adapter socket by starting coordinating between its convex key and keyway of coupling nut to be moved rearwards by and rotating with coupling nut, now the bail on plug casing starts to rotate relative to cutting ferrule, when plug puts in place with adapter socket grafting, cutting ferrule rollback also makes bail fall into just can to send the signal that puts in place in its bail nest.
In the other embodiments of plug, the three crank slot rear ends that card puts can also be enclosuring structure, in such cases, is installed and follows closely after when assembling.
The embodiment of electric coupler component, as shown in figure 11, this electric coupler component includes plug and socket.
Plug is with front end for inserted terminal, and its structure is identical with the structure of the embodiment of above-mentioned plug, and it will not go into details herein.
Socket is equally with front end for inserted terminal, and it includes Socket casing, and Socket casing is provided with the external screw thread corresponding with the coupling nut of plug, it addition, be additionally provided with in Socket casing for sealing, with the outer peripheral face of the seal section of plug casing, the side face sealing ring coordinated.

Claims (9)

1. plug, this plug is with front end for inserted terminal, described plug includes plug casing and coupling nut, it is characterized in that, plug casing is also cased with cutting ferrule, card puts and is provided with convex key and penetrates three crank slots of its jacket wall, cutting ferrule front end has for the pressure-bearing portion with the press-fit of adapter socket top, ripple spring it is top-loaded with between rear end and plug casing, tandem on the internal face of coupling nut it is provided with escape groove and keyway, escape groove is and the annular groove of plug casing coaxial line, the convex key mapping that card puts is in described escape groove, the convex key that keyway puts with card is corresponding and its front end extends to escape groove, the outer peripheral face of plug casing is provided with the bail that three crank slots put with card are corresponding, bail is positioned at the rear end of three crank slots and spacing with before and after coupling nut coordinates.
2. plug according to claim 1, it is characterised in that the rear end of described three crank slots is hatch frame, described bail is arranged in the hatch frame of corresponding three crank slots.
3. plug according to claim 2, it is characterised in that be provided with pad in the rear end of cutting ferrule on plug casing, the opening of three crank slot rear end is blocked by pad.
4. the plug according to claim 1-3 any one claim, it is characterised in that bail is by stretching to spacing with before and after coupling nut in the escape groove of coupling nut cooperation.
null5. electric coupler component,Including plug and socket,Plug includes plug casing and coupling nut,Socket includes Socket casing,Socket casing is provided with the external screw thread corresponding with coupling nut,It is characterized in that,Plug casing is also cased with cutting ferrule,Card puts and is provided with convex key and penetrates three crank slots of its jacket wall,Cutting ferrule front end has the pressure-bearing portion for coordinating with adapter socket、Ripple spring it is top-loaded with between rear end and plug casing,Tandem on the internal face of coupling nut it is provided with escape groove and keyway,Escape groove is and the annular groove of plug casing coaxial line,The convex key mapping that card puts is in described escape groove,The convex key that keyway puts with card is corresponding and its front end extends to escape groove,The outer peripheral face of plug casing is provided with the bail that three crank slots put with card are corresponding,Bail is positioned at the rear end of three crank slots and spacing with before and after coupling nut coordinates.
6. electric coupler component according to claim 5, it is characterised in that the rear end of described three crank slots is hatch frame, described bail is arranged in the hatch frame of corresponding three crank slots.
7. electric coupler component according to claim 6, it is characterised in that be provided with pad in the rear end of cutting ferrule on plug casing, the opening of three crank slot rear end is blocked by pad.
8. electric coupler component according to claim 5, it is characterised in that the front end place of plug casing has a seal section, is provided with in Socket casing for sealing, with the outer peripheral face of this seal section, the side face sealing ring coordinated.
9. the electric coupler component according to claim 5-8 any one claim, it is characterised in that bail is by stretching to spacing with before and after coupling nut in the escape groove of coupling nut cooperation.
CN201310556875.5A 2013-06-28 2013-11-09 Plug and use the electric coupler component of this plug Expired - Fee Related CN104253348B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310556875.5A CN104253348B (en) 2013-06-28 2013-11-09 Plug and use the electric coupler component of this plug

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201310266197.9 2013-06-28
CN201310266197 2013-06-28
CN2013102661979 2013-06-28
CN201310556875.5A CN104253348B (en) 2013-06-28 2013-11-09 Plug and use the electric coupler component of this plug

Publications (2)

Publication Number Publication Date
CN104253348A CN104253348A (en) 2014-12-31
CN104253348B true CN104253348B (en) 2016-07-06

Family

ID=52188016

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310556875.5A Expired - Fee Related CN104253348B (en) 2013-06-28 2013-11-09 Plug and use the electric coupler component of this plug

Country Status (1)

Country Link
CN (1) CN104253348B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105932484B (en) * 2016-04-29 2019-07-26 中航光电科技股份有限公司 Connector, intermateable connector and anti-loose connector assembly
CN109428204A (en) * 2017-09-01 2019-03-05 中航光电科技股份有限公司 A kind of ripple spring and pin connector and connector assembly
CN111029856A (en) * 2019-11-21 2020-04-17 贵州华烽电器有限公司 Structure for reminding in-place combination of threaded connector
CN111048951B (en) * 2019-12-09 2021-05-11 中航光电科技股份有限公司 Anti-loosening high-temperature ceramic plug
CN111370898B (en) * 2020-03-24 2021-09-03 中航光电科技股份有限公司 Connector and plug

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1123878B (en) * 1978-10-19 1986-04-30 Bendix Corp ELECTRIC CONNECTOR
US4629272A (en) * 1985-04-04 1986-12-16 Matrix Science Corporation Electrical connector assembly with anti-rotation latch mechanism
US5176414A (en) * 1991-04-12 1993-01-05 Kings Electronics Co., Inc. Snap-on bayonet nut coupling sleeve
US5466020A (en) * 1994-12-30 1995-11-14 Valleylab Inc. Bayonet connector for surgical handpiece
EP1156260A2 (en) * 2000-05-15 2001-11-21 Whittaker Corporation Seal mechanism for bayonet-type connector
DE10048507C1 (en) * 2000-09-29 2002-03-28 Neutrik Ag Schaan Plug part of BNC plug connector for coaxial cable has bayonet sleeve operated via separate operating sleeve at rear of plug part
CN2634675Y (en) * 2003-05-16 2004-08-18 中航光电科技股份有限公司 Anti-corrosion water-tight quick connection circular electric connector
CN201789146U (en) * 2010-03-30 2011-04-06 中航光电科技股份有限公司 Locking seal electrical connector
CN102318146A (en) * 2009-02-11 2012-01-11 Itt制造企业公司 The electric connector that comprises the bayonet locking device
CN102646888A (en) * 2012-04-09 2012-08-22 中航光电科技股份有限公司 Socket, socket assembly and connector assembly
CN202840117U (en) * 2012-08-24 2013-03-27 沈阳兴华航空电器有限责任公司 In-place loosening identification device
JP2014199811A (en) * 2013-03-15 2014-10-23 アンフェノル・コーポレーション Positive locking connector coupling

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1123878B (en) * 1978-10-19 1986-04-30 Bendix Corp ELECTRIC CONNECTOR
US4629272A (en) * 1985-04-04 1986-12-16 Matrix Science Corporation Electrical connector assembly with anti-rotation latch mechanism
US5176414A (en) * 1991-04-12 1993-01-05 Kings Electronics Co., Inc. Snap-on bayonet nut coupling sleeve
US5466020A (en) * 1994-12-30 1995-11-14 Valleylab Inc. Bayonet connector for surgical handpiece
EP1156260A2 (en) * 2000-05-15 2001-11-21 Whittaker Corporation Seal mechanism for bayonet-type connector
DE10048507C1 (en) * 2000-09-29 2002-03-28 Neutrik Ag Schaan Plug part of BNC plug connector for coaxial cable has bayonet sleeve operated via separate operating sleeve at rear of plug part
CN2634675Y (en) * 2003-05-16 2004-08-18 中航光电科技股份有限公司 Anti-corrosion water-tight quick connection circular electric connector
CN102318146A (en) * 2009-02-11 2012-01-11 Itt制造企业公司 The electric connector that comprises the bayonet locking device
CN201789146U (en) * 2010-03-30 2011-04-06 中航光电科技股份有限公司 Locking seal electrical connector
CN102646888A (en) * 2012-04-09 2012-08-22 中航光电科技股份有限公司 Socket, socket assembly and connector assembly
CN202840117U (en) * 2012-08-24 2013-03-27 沈阳兴华航空电器有限责任公司 In-place loosening identification device
JP2014199811A (en) * 2013-03-15 2014-10-23 アンフェノル・コーポレーション Positive locking connector coupling

Also Published As

Publication number Publication date
CN104253348A (en) 2014-12-31

Similar Documents

Publication Publication Date Title
CN104253348B (en) Plug and use the electric coupler component of this plug
US7988476B2 (en) Sealed plug assembly
CN102751617B (en) A kind of Anti-loose screw thread coupling and assembly thereof
CN102170075B (en) Shielding element and electrical connector plug using same
US9362671B2 (en) Coaxial cable connector with quick-locking connection
CN103441374A (en) Underwater pluggable electric connector
CN109119818B (en) Circular connector and connector assembly
CN103219601B (en) Electric connector and electric coupler component
CN103050829B (en) Resistance to environment outlets and use the electric coupler component of this socket
CN102176585A (en) Electric connector assembly
CN108598753B (en) Connector terminal with improved retention
CN202013990U (en) Misassemble preventing connector
CN202633617U (en) Plug pin connector with boss structure
CN205752864U (en) A kind of coaxial cable connector
US9425538B2 (en) Cable connector assembly with a snap ring
CN204680837U (en) A kind of small circular big current rotary self-locking connector
CN203071312U (en) Connector adaptive interface sealing structure
CN105958264A (en) Adapter connector
CN103855522B (en) A kind of waterproof plug socket being applicable to boats and ships
CN209448110U (en) Plug-type locking connector component
CN203312582U (en) Socket and electric-connector assembly using socket
WO2015039406A1 (en) Wire to wire connector for cable, wire to wire connector assembly for cable and cable assembly with wire to wire connector
CN101984525B (en) Short-circuit proof connector
CN205071077U (en) Last mile adapter and terminal
CN204720578U (en) Three anti-connectors

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160706

Termination date: 20181109

CF01 Termination of patent right due to non-payment of annual fee